Power-transmitting device.



G. F. LINDQUIST. POWER TRANSMITTING DEVICE;

APPLICATION FILED MAY 9, 1912.

. Patented Aug. 20, 1918.

2 SHEETSSHEET l WYQUW e. F. L INDQUIST.

POWER TRANSMITTING DEVICE.

APPLICATION FILED MAY 9, 1912.

Patenteii Aug. 20, 1918 2 SHEETS-SHEET 2.

wanna susravn r. mnems'r, or CHICAGO, ILLINOIS, nssrcn'ron'ro UNION srncmn necnmn comm, .OF cmcnco, ILLINOIS, A conronmrronor rumors.

POWER-TRANSMITTING- DEVICES,

Specification et Letters Batcnt. Patented Application filecmay 93912. Seria11io.696,204.

aeraaae.

To all whom it may concern:

Be it known that I, GUSTAVE F. LIND- Qms'r, a' citizen of the United States, residing at Ohicago,.in the county of Cook, State" J of Illinois, have invented certain new and useful Improvements in Power-Transmitting Devices, .of which the following is a description, reference being had to the accompanying drawing, and to the figures of reference'marked-thereon. I

The invention relates to new and useful improvements in power transmitting devices, and more especially to devices of this,

character which may be used in connection with sewing machines where the power is transmitted from apower shaft through the transmitter to the stitching mechanism or other operating parts of a sewing machine; An object of the invention is to provide a transmitter wherein a dual drive may be derived from the transmitter. A further object of the invention is to provide a transmitter of the above character with controlling devices whereby one of the driven wheels may be controlled entirely independently of the other driven wheel.

These and other objects will in ,part be obvious and will in part be hereinafter more fully disclosed.

In the drawings which show. by way of illustration one embodiment of the invention; I Figure l is a partial'side elevation and a partial sectional view showing a transmitter having my improvements applied thereto;

Fig. 2 is an end view of the same.

Prior to the present invention, it was common to provide a power transmitter which included a supporting frame 1, which could be held by any convenient means such as screws or bolts to the under side of a bench or table. At the opposite ends of the frame are bearings 2 and 3, in which is mounted a rod 4. Secured to the rod-4 is a bracket arm 5 which is freely mounted on the rod so as to turn about the same. Said bracket 5 carries laterally projecting arms 6, 6, through which pass screws 7, 7, These screws are adapted to engage a supporting frame 1 and serve-as a means for angularly adjusting thebracket about the pivotal rod '4 therefor. This bracket carries a sleeve 8 in which is secured a supporting shaft 9.

These parts are all fully shown and described the patent to'Dudley S. Seymour,

No. 85 L671, granted May 21st,1907. In said patent is shown and described a driving from the driving member to the driven member. The. present invention is .an im--- .provement on the transmitter shown and described in the above-mentioned patent, and consists broadly in roviding two driven -members which may be brought into' con-' tactwith a driving member, for the purpose of securing from the driving member a dual drive. The invention further contemplates the independent control-of one of the driven members whereby it may be caused to engage the driving member so that motion may be imparted thereto, while the other driven member is-at rest.

Referring more in detail to the drawings,

. the invention consists in providing the supporting shaft 9, with a driving wheel .10

which is free to turn on said supporting shaft, and which is-also free to slide longitudinally thereon. Mo'unted'on the shaft 9 is a driven. wheel 11 which is located at. one side of the driving wheel 10, and a driven 'Wheel 12 which is located at the other side of. v the driving wheel 10. The driving wheel 10 as herein shown, is constructed so as to re-' ceive a fiat belt. The side flanges 13 of the belt wheel are formed with brake surfaces 14 and'15. These brake surfaces are cone-shaped and-are 'reversely located relative to each other. The driving wheel 11 is carried by a sleeve 16 which is free to rotate on the shaft 9, and which may also be moved longltudinall'y thereof. Said sleeve 16 has an in- -wardly' projecting reduced portion 17. A

collar 18 rests against one side of the driving wheel 10 .and "is also provided with a reduced portion similar to the reduced portion on the sleeve 16. A coiled spring '19 surrounds the reduced portions of the collar 18and the sleeve 16.. This spring normally tends to separate the driving wheel 10 and the driven wheel 11. A second collar 20. is rigidly secured to the shaft 9 and limits the movement of the wheel 10 tothe right, as

viewed in Fig. 1. The driven wheel 11 is formed with a V-shaped belt groove 21 adapted to receive a belt 22. Said drlven wheel isalso formed with an overhanging flange 23 carrying a leather friction pad 24. This overhanging flange, 23 is so disposed that its inner surface is substantially arallel with the conical surface 15 on the riving Wheel 10 so that when the wheel 11 is moved relative to the wheel 10, said friction pad 24 may engage the conical surface 15 of the driving wheel, and the parts held so as to turn together. The driven wheel 11 is alsov formed with an annular brake flange 25 which is adapted to cooperate with the brake pad 26-, carried by a bolt mounted in an arm 27 projecting from the bracket 5. is adapted to be adjusted in the arm 27 and is held in adjusted position by a set nut 28.

The driven wheel 12 is formed with a supporting sleeve29 which is free to turn on the shaft 9, and abuts against a fixed collar 30 secured to the end of the shaft. Said sleeve 29 is formed with a reducedportion 31. On the opposite side of the driving wheel 10 is a second collar 32 having a reduced portion 33. A coiled spring 34 engages the reduced portions of the collar 32, and the sleeve 29 and said coiled spring normally tends to separate the driven member '12 and the driving. member 10. Said driven member 12 is formed with an overhanging flange 35 which carries a friction pad 36 adaptedt'o cooperate with the conical flange 14. Said driven wheel 12 is also provided with a V-shaped belt engaging surface 37 which is adapted to receive a cord belt 38. Said flange 35 is formed with a cylindrical brake surface 39 which is adaptedto 006perate with a brake shoe 40.

A lever 41 is pivoted at 42 to the support-- 1 ing bracket 5 and is provided with an eye v screw 43 adapted to receive a rod whereby the lever may be shifted. Said lever carries a second arm 44, which is forked so as to extend to eachside of the shaft 9, and bear against a collar 45 which iscapable of sliding freely on rests against the end of the sleeve 16. The lever 41 carries a tends over the transmitter and carries a brake shoe 40. The brake shoe is adjustably secured-to the free end of the arm 46, by a 47. The spring 34 between the driving member 10 and the driven member 12 is heavier than the spring 19 between the drivingv member 10 and the driven member 11, so that any pressure brought to bear against the driving and driven members will first collapse the spring 19 before collapsing the spring 34. The spring 34 as above noted,'tends to'separate the driving member 10, and the driving member 12, and will normally hold 'the' driving member pressed against the collar20 which is fixed to the shaft 9.

l The spring 19 as above noted, tends to separate the driven member 11 and the driving member 10, and to hold the driven member 11 in contact with the brake shoe 26. A

spring 48 is connected at one end to the This bolt theshaft 9. This collar 45- third arm 46 which exand stop the same.-

When the parts are in the position shown in Fig. 1, the driving and driven members are separated and the driven member 12 is held from turning by the brake shoe 40 through the action of the spring 48, while the driven member 11 is held from turning by the brake shoe 26 through the action of the spring 19. If the outer end 43 of the lever 41 is depressed, the spring 19 will be compressed and the driven member 11 moved from contact with the brake shoe 26,

until the friction pad 24 engages the conical surface 15 of the driving member 10. This movement of the driven member 11, will cause said driven member to be engaged by and moved with the driving member 10. At p this time the driven member 12 is stationary, and if desired, the releasing of the lever 43 will disconnect the driven member 11 from the driving member 10. It will therefore, be seen that the driving member 10 may be connected to the driven member 11 independently of any'connection between the driving member 10 and theldriven member 12. A further movement of the lever 41 will compress the spring 34 and move the driven member 11 and the driving member 10 bodily along the shaft 9 until t e conical flange 14 of the driving member 10 en-. gages the friction "pad 36 carried by the flange 35 of the driven member 12. When these parts are brought into engagement, then both the driven member 11 and the driven member 12 will turn in unison with the driving member 10. The releasing of brake pad to engagethe driven member 12 'whereintwo driven members may be ,s1 1ccesslvely connected with a driving-member] lateral movement of -A further releasing movement of the lever 41 allows the driven;

that from the above" 7 construction, I have provided a transmitter and adualdrive secured from a single driv- 'I ing member. This transmitter is especially useful in connectlon with a sewing machme for sew-ingheavy articles wherein the 'arti--. by a traveling.

ole to be sewed is conveyed conveyer to the stitchingv mechanism.

such instance, the conveyor willibedriven from the driven member 11,

while the stitching mechanism will be driven from the driven member 12. By the proper manipulation of the transmitter, the conveyer can be actuated to bring the article to be stitched into the range of the stitching mechanism, after which a further movement of the transmitter will cause the stitching mechanism to operate to stitch the article as it is It is obvious that minor changes in the details of construction and arrangement of parts may be made, without departing from the spirit of the invention as set forth in the appended claims. It is also obvious that instead of having the driving member,- in the center, and the driven members on each side thereof, that these members maybe arranged in other relations to each other, the essential feature being that the driving member contacts first with one-driven member and then the other, so as to secure the successive drives.

Having thus particularly described my invention, what I claim as new and desire. to secure by Letters Patent, is

1. A power transmitter including in com bination a driving wheel, two -driven wheels driving wheel.

normally disconnected from the driving wheel, and means for connecting first one driven wheel to the driving wheel and for subsequently connecting the other driven wheel to the driving wheel while the first mentioneddriven wheel is connected to the 2. A power transmitter including in combination a driving, wheel, two-driven wheels .normally disconnected from the driving wheel, yieldingmeans for normally holding the drivenwheels out 'of .contact with the driving wheel and means for connecting first one driven wheel to the driving wheel and for subsequently connecting the other. driven wheel. to the driving wheel while the first mentioned driven wheel is connected to said driving wheel.

including in comerating friction surfaces, springs for normally separating the driven members from the .driving member and a single lever for causing first one driven member and then the other to engage said driving member.

, 4. A power transmitter including in combination a supporting shaft, a driven memmember,

ber free-to turn on said shaft and held from lateral movement thereon, a driving member free to turn on said shaft and laterally movable thereon, a second driven 'member free to turn on said shaft and capable of moving laterally thereon, springs for normally separating thedriven members from the driving member, and means for moving the last named driven member laterally into engagement with the driving member, and

the driving member laterally into engage ment with the first-named driven member.

5. A power transmitter including in combinationa supporting shaft, a driven member free to turn onsaid shaftand held fromlateral movement thereon, a driving member free to turn on said shaft and laterally movable thereon, a second driven member free to turn on said shaft and capable of moving laterally thereon, a spring between the first driven member and the driving a spring between the second driven and the driving member, said last-named spring being of less tension than the firstnamed spring, and means whereby the last- I named driven member may be moved into engagement withthe' driving member and the driving member moved into engagement with the first-named driven member.

6. A power transmitter including in combination a supporting bracket,'a shaft carried thereby, a driven member mounted on said shaft and held from lateral movement thereon. a driving member mounted on said shaft and free to slide laterally thereon, a spring intermediate the driven member and the driving member, a collar secured to the shaft and limiting the movement of the driving member through the action of said spring, a second-named driven membe1 freely mounted on said shaft and capable of moving laterally thereon, aspring inter posed between the driving member and the second-named driven member, said driven member having conical friction surfaces formed thereon, said drlvenmembers having overhanging flanges adapted to coiiperate respectively with the conical friction surfaces of the driving member, th'e spring between the first driven member and the driv-- ing member being of greater tension than the spring between the second driven memberand the driving member, and means for moving the second driven member into con tact with'the driving member,and the driv- 

